W18E001 + 27TDFC bookshelves, need design help (sonotube?)

[thadman]

While im collecting funds to finish my line array Id like a set of nice bookshelves (ill be using them as computer speakers) to hold me off till I get them finished.

I just got a pair of Seas Excel W18E001s in a trade (man these are pretty) and the Seas 27TDFC (should I look at any other tweeters? remember these are just to hold me off till my line arrays are completed) are quite inexpensive and would be a worthy investment to hold me off. Would a T-amp work to power them for low level listening, or should I invest in a Crown XLS-202D?

I plan on using most of the existing equipment I have planned for the line arrays, which include the DCX2496 for crossovers and the XLS-202B for the W18E001s.

Also, I was considering buying a tiny sonotube (probably like 8-10" sonotube) and then cutting 2 slits down the side and inserting a piece of MDF to use as the baffle. From the top the sonotube would look like a C, without the baffle in place.

I dont have plans on building a subwoofer for the computer (but it may happen in the future with a Dayton RS15 and a plate amp or something along those lines), as these bookshelves would probably suffice for low level listening. Should I port them or seal them, and if I ported them how low should I port them?

[johngalt47]

I have these drivers and need the .frd and .zma files for the Seas woofer. Does anyone have them?

[thadman]

I was quite surprised to see this post in my email, especially one from John Galt

Sadly I do not have the files, but someone possibly does. free bump.

[jerome69]

http://www.crestviewcable.com/~catapult/Seasdata.zip

Enjoy

[johngalt47]

Thanks!

I tried using the freq response data in PCD but it doesn't look correct.

[johngalt47]

I'm in the process of "tuning" the crossover for a W18E001 + Dayton RS28A-4. The guys over at Parts-Express are helping me with the crossover.

It looks to be a promising design.

[mdocod]

Originally Posted by thadman

Would a T-amp work to power them for low level listening, or should I invest in a Crown XLS-202D?

I plan on using most of the existing equipment I have planned for the line arrays, which include the DCX2496 for crossovers and the XLS-202B for the W18E001s.

If these speakers are run full range, you're going to be Xmax limited to ~10-20W with most program material depending on the box size/tuning/type etc. I think a little chip amp is all you need for both the highs and lows, but if you already have a XLS amp then go ahead and use that for the lows I suppose.

I dont have plans on building a subwoofer for the computer (but it may happen in the future with a Dayton RS15 and a plate amp or something along those lines), as these bookshelves would probably suffice for low level listening. Should I port them or seal them, and if I ported them how low should I port them?

If they are going to be run full range vented is going to have more benefits than drawbacks IMO. If you add a sub later you could always plug off the vent and cram the boxes full of dampening material.

I like 0.75-1.5ft^3 range, anywhere from 25-35hz tuning depending on the room and desired bottom end loading/protection. If you want the boxes to stay a little smaller, ~0.5ft^3 tuned to ~40hz looks good to me as well.

Best of luck with the design!

[wallacefl]

would like to revive this old thread...anyone have a 1800hz crossover for the W18E001. I have a pair of OEM RAAL 20xr which that by design cross at 1800 and would like to give this combo a go...thanks